chore(deps): bump rustls from 0.21.5 to 0.21.6

[dependabot[bot]]

Bumps rustls from 0.21.5 to 0.21.6.

Release notes

Sourced from rustls's releases.

v/0.21.6

• Deprecated RootCertStore.add_server_trust_anchors, use RootCertStore.add_trust_anchors instead.
• Updated webpki-roots to 0.25.
• Updated webpki to 0.101.2

What's Changed

• ci: cross compile and cargo semver checks. by @​cpu in rustls/rustls#1355
• client::builder: fix PhantomData clippy lint by @​ctz in #1383
• Correct/allow unnecessarily &mut function args by @​ctz in #1383
• Fix up nightly clippy issue with incorrect comment by @​djc in #1383
• anchors: deprecate add_server_trust_anchors by @​cpu in #1383
• verify: avoid deprecated webpki methods by @​cpu in #1383
• deps: update to webpki-roots 0.25, fix deprecations by @​cpu in #1383
• Cargo: bump version 0.21.5 -> 0.21.6 by @​cpu in #1383
• v0.21.6 preparation by @​cpu in rustls/rustls#1383

Full Changelog: https://github.com/rustls/rustls/compare/v/0.21.5...v/0.21.6

Commits

• 40e4b5d Cargo: bump version 0.21.5 -> 0.21.6
• ea71de2 deps: update to webpki-roots 0.25, fix deprecations.
• 2b97c8d verify: avoid deprecated webpki methods.
• 2ac3cec anchors: deprecate add_server_trust_anchors.
• 4b8be56 Fix up nightly clippy issue with incorrect comment
• 0809097 Correct/allow unnecessarily &mut function args
• 841c6a3 client::builder: fix PhantomData clippy lint
• 21a54ba ci: add a cargo-semver-checks action.
• fd79e04 ci: add 32-bit cross compile check.
• See full diff in compare view

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